December in Kamloops averages a daily high of 0.9°C with nights around -5.1°C. Expect roughly 10.6 wet days totalling 25.8mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Kamloops is April–September.
Based on KAMLOOPS A, BC CA (9.9km), 1995–2024. 18 years of December data.